CN212208964U

CN212208964U - Flexible traction cable for drilling machine

Info

Publication number: CN212208964U
Application number: CN202021252664.4U
Authority: CN
Inventors: 张宾宾; 李志强; 李鑫钊
Original assignee: Henan Qingzhou Cable Co ltd
Current assignee: Henan Qingzhou Cable Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-12-22
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a traction flexible cable for a drilling machine, which comprises a tensile traction inner core, a plurality of flexible twisted conductive cores and a cable protective sleeve, wherein the flexible twisted conductive cores are arranged around the tensile traction inner core; the soft twisted conductive core is formed by spirally twisting a plurality of soft electric cores; the flexible twisted conductive core is sequentially provided with an insulating layer, a water-resistant layer and a flame-retardant layer from inside to outside; the traction flexible cable for the drilling machine is arranged in a flexible manner, is convenient to bend and pull for use in frequent movement, and is used for enhancing the tensile and torsional properties of the cable by virtue of the built-in tensile traction inner core.

Description

Flexible traction cable for drilling machine

Technical Field

The utility model relates to the technical field of cables, concretely relates to drilling machine is with drawing flexible cable.

Background

In order to perform the drilling work, the drill is required to be placed to a deep depth. Whereas the drilling machine needs to be powered from the ground. For this purpose, cables are used which have to meet very specific requirements. The pressure conditions that sometimes occur at this depth must be taken into account, for which a correspondingly pressure-resistant cable construction is required, but at the same time the ground temperature, which is in the order of magnitude of 120 ℃ and above, is also taken into account, which is the temperature generated by the heat consumption of the transmission components themselves. Another condition of normal operation of the cable is that when the working time is long, the cable is insensitive to the aggressive media existing in the borehole or the drilled well as much as possible, and because the traction cable can be used outdoors, the outdoor temperature change is large due to weather, the aging of the outer layer of the cable is easily accelerated, and the service life of the cable is reduced.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a drilling machine is with drawing flexible cable, its electric conductive property is good, the anti button of tensile, is applicable to the operational environment that the drilling machine is complicated more.

The utility model adopts the technical proposal that: a traction flexible cable for a drilling machine comprises a tensile traction inner core, a cable protection sleeve and a plurality of flexible twisted conductive cores which are arranged around the tensile traction inner core; the soft twisted conductive core is formed by spirally twisting a plurality of soft electric cores; an insulating layer, a water-resistant layer and a flame-retardant layer are sequentially arranged outside the flexible twisted conductive core from inside to outside; the tensile traction inner core comprises a flexible tensile inner core body and an anti-torsion woven net which are arranged from inside to outside; and a flexible supporting layer is filled in the cable protective sleeve and a gap between the tensile traction inner core and the flexible twisted conductive core.

In the technical scheme: the traction flexible cable for the drilling machine is arranged in a soft body, so that the traction flexible cable is convenient to bend and pull in frequent movement and can be used, the tensile and anti-torsion performance of the cable is enhanced by the built-in tensile traction inner core, and the cable can bear tensile force through the flexible tensile inner core when moving and being pulled, so that the cable is prevented from being damaged due to tension; in addition, when the cable is subjected to torsion, the torsion-resistant mesh grid of the tensile traction inner core can enhance the torsion resistance of the cable, and the cable is prevented from being damaged by the torsion; the soft twisted conductive core for conducting electricity is formed by spirally twisting the electric core, is soft and easy to bend, can meet the requirement of over bending in a narrow environment when a drilling machine runs, and can bear the requirement of over bending. The flexible twisted conductive core is wrapped by the insulating layer, the water-resistant layer and the flame-retardant layer, so that the cable can meet the flame-retardant requirement of A class, and the insulating layer and the water-resistant layer can improve the waterproofness and the insulating effect. The flexible supporting layer is filled in the cable protective sleeve and in the gap between the tensile traction inner core and the flexible twisted conductive core, so that the whole cable is easy to bend, the cable is ensured to have better flexibility and high elastic energy, and the cable is prevented from cracking when being excessively bent and is ensured to have higher safety and reliability.

Preferably, the cable protection sleeve comprises an outer sheath, a waterproof layer and a fire insulation layer which are arranged from outside to inside.

Preferably, the surface of the outer sheath of the cable protection sleeve is provided with a wear-resistant anti-slip layer.

Preferably, a fluorescent layer is formed on the surface of the wear-resistant and anti-slip layer.

Preferably, the outer sheath is made of a halogen-free low-smoke ultraviolet-resistant thermosetting elastomer material.

Preferably, the flexible support layer is made of graphitized carbon fibers.

The utility model has the advantages that: the traction flexible cable for the drilling machine is arranged in a soft body, is convenient to bend and pull in frequent movement, and enhances the tensile and torsional properties of the cable by the built-in tensile traction inner core; the soft twisted conductive core for conducting electricity is formed by spirally twisting the electric core, is soft and easy to bend, can meet the requirement of over bending in a narrow environment when a drilling machine runs, and can bear the requirement of over bending. Whole cable has more excellent mechanical strength, tensile resistance and weatherability, the utility model discloses rational in infrastructure, the performance is excellent, but the wide application is in the electrically conductive traction technology field of drilling machine drilling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a cross-sectional view of a traction flexible cable for a drilling machine according to a first embodiment of the present invention.

Reference numerals: the flexible cable comprises a tensile traction inner core 100, a soft twisted conductive core 200, an anti-twisting woven mesh 300, an insulating layer 400, a water-resistant layer 500, a flame-retardant layer 600, a flexible supporting layer 700, an outer sheath 800, a waterproof layer 900 and a fire-insulating layer 1000.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. The present invention is described for better illustration of the function and method for better understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Referring to fig. 1, the traction flexible cable for a drilling machine provided in this embodiment includes a tensile traction core 100, a plurality of flexible twisted conductive cores 200 disposed around the tensile traction core 100, and a cable protection sleeve, and is disposed in a flexible manner, so as to be conveniently bent and pulled during frequent movement. Specifically, the flexible twisted conductive core 200 is formed by spirally twisting a plurality of flexible electric cores; the insulating layer 400, the water-resistant layer 500 and the flame-retardant layer 600 are sequentially arranged outside the soft twisted conductive core 200 from inside to outside; the soft twisted conductive core 200 is wrapped by the insulating layer 400, the water-resistant layer 500 and the flame-retardant layer 600, so that the cable can meet the flame-retardant requirements of the class A, and the insulating layer 400 and the water-resistant layer 500 can improve the waterproof property and the insulating effect. In order to improve the tensile and torsional properties of the cable, the present embodiment includes a flexible tensile inner core and a torsional mesh 300 arranged from the inside to the outside in the tensile pulling inner core 100; the tensile and torsion resistance of the cable is enhanced by the built-in tensile traction inner core 100, and the cable can bear tensile force through the flexible tensile inner core when moving and being pulled, so that the cable is prevented from being damaged by tension; in addition, the operating environment of the drilling machine is generally narrow, so that the cable is bent excessively when being used in a narrow space, and the internal insulation and elements of the cable are damaged; in the embodiment, when the cable is subjected to torsion, the anti-torsion woven mesh 300 of the tensile traction core 100 can enhance the anti-torsion capability of the cable, so that the cable is prevented from being damaged by the torsion; the soft twisted conductive core 200 for conducting electricity is formed by spirally twisting a battery core, is soft and easy to bend, can meet the requirement of over bending in a narrow environment when a drilling machine runs, and can bear the requirement of over bending. The gap between the cable sheath and the tensile pulling core 100 and the flexible twisted conductive core 200 is filled with a flexible support layer 700. The flexible supporting layer 700 filled in the gap between the tensile traction inner core 100 and the flexible twisted conductive core 200 in the cable protective sheath ensures easy bending of the whole cable, better flexibility and high elasticity of the cable, no cracking when the cable is excessively bent, and higher safety and reliability of the cable, and as an optimal implementation mode, the flexible supporting layer 700 is made of graphitized carbon fibers.

As shown in fig. 1, the traction cable used in the conventional drilling machine is hard, and is prone to breakdown when subjected to water vapor for a long time, so that the reliability and the service life of the cable are greatly reduced. To prevent moisture ingress, the cable protective sheath of the traction cable in this embodiment comprises an outer sheath 800, a waterproof layer 900 and a fire barrier 1000 arranged from the outside to the inside. The outer sheath 800 of the cable protective sheath has certain abrasion resistance, bears larger pressure and resists long-term reciprocating motion fatigue stress; the waterproof layer 900 can prevent water vapor from entering the cable, and the fire-proof layer 1000 can play a fire-proof and flame-retardant role; the flame barrier 1000 is preferably formed by an extrusion process using a polyolefin material, and the outer sheath 800 in this embodiment is made of a halogen-free low-smoke ultraviolet-resistant thermosetting elastomer material.

In addition, the traction cable is exposed to the working environment for a long time during use, and the surface of the outer sheath 800 of the cable protection sleeve is provided with a wear-resistant anti-slip layer in the embodiment. The wear-resisting skid resistant layer has the wear-resisting antiskid effect, avoids the cable to expose wearing and tearing to damage, has the antiskid effect simultaneously concurrently, avoids the cable frequently to slide.

In some embodiments, the drilling machine is operated in a low-brightness environment, the cable is easily crushed or forms a trafficability obstacle, and the wear-resistant and anti-slip layer is formed on the surface of the cable. The fluorescent layer can mark the position of the cable, and plays a role in marking and displaying.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A traction flexible cable for a drilling machine comprises a tensile traction inner core (100), a cable protecting sleeve and a plurality of flexible twisted conductive cores (200) which are arranged around the tensile traction inner core (100); the method is characterized in that:

the soft twisted conductive core (200) is formed by spirally twisting a plurality of soft electric cores; the flexible twisted conductive core (200) is sequentially provided with an insulating layer (400), a water-resistant layer (500) and a flame-retardant layer (600) from inside to outside;

the tensile traction inner core (100) comprises a flexible tensile inner core body and an anti-torsion woven net (300) which are arranged from inside to outside;

and a flexible supporting layer (700) is filled in the cable protective sleeve and a gap between the tensile traction inner core (100) and the soft twisted conductive core (200).

2. The pulling flexible cable for drilling machines according to claim 1, characterized in that: the cable protection sleeve comprises an outer sheath (800), a waterproof layer (900) and a fire insulation layer (1000) which are arranged from outside to inside.

3. The pulling flexible cable for drilling machines of claim 2, wherein: and a wear-resistant anti-slip layer is arranged on the surface of the outer sheath (800) of the cable protection sleeve.

4. The pulling flexible cable for drilling machines according to claim 3, characterized in that: and a fluorescent layer is formed on the surface of the wear-resistant anti-slip layer.

5. The pulling flexible cable for drilling machines of claim 2, wherein: the outer sheath (800) is made of halogen-free low-smoke ultraviolet-resistant thermosetting elastomer material.

6. The pulling flexible cable for drilling machines according to claim 1, characterized in that: the flexible support layer (700) is made of graphitized carbon fibers.